1:1 apostle. This refers to Paul’s official position as a messenger sent by Christ (see note on Rom. 1:1; Introduction to 1 Corinthians: Author and Date). by the will of God. Paul’s mission was not a self-appointed one, or based on his own achievements. Rather, his credentials were by divine appointment and his letter reflected not his own message but the words of Christ (see Introduction to Romans: Author and Date; cf. Acts 26:15–18). Timothy our brother. Paul’s cherished son in the faith and a